Sleeping in socks affects different people in different ways. For many people who usually have cold feet, sleeping in socks will make them feel warmer, more comfortable and have a better night’s sleep. However, for many people who usually have hot feet, wearing socks to bed will affect their sleep and their feet will sweat, which will have a bad effect. Also, for people who sweat a lot, sleeping with socks can make the feet moist, which can lead to fungal or bacterial infections, and is not recommended. However, if you have the habit of using socks to sleep, you should try to use five-toe socks, that is, socks with separate toes, which can keep your feet warm and reduce the chance of fungal infections.